Find Duplicates Condition: Given a slice of strings. Return a slice of strings that appear more than once in the original slice. The order of elements in the result is in the order of first appearance in the original slice. Input data: []string — slice of strings Output data: []string — strings that appear more than once, in order of first appearance Constraints: - 0 <= len(input) <= 10^4 - Each string consists of Latin letters, length 1..50 Example: Input: ["a", "bb", "bb", "aa", "a", "a"] Output: ["a", "bb"]